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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Helix Bolt on Turbo Upgrade in tuning/testing phase!



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      10-21-2009, 05:38 PM   #45
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Originally Posted by scheherazade View Post
Because if something F's up and I lose oil pressure, I don't want to be replacing two turbos.

The only kind of 'practical' rebuild you'd do on a journal bearing turbo is replacing seals.
A full rebuild kit comes in close to the cost of a new turbo.

-scheherazade
If you are losing enough oil pressure to piss off your turbos, you've got much bigger bearings to worry about than the sleeve type

I've also seen some pretty jacked up sleeve bearing CHRAs come back to life for 2-300 bucks. A ballistics CHRA is easily 600-700+
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      10-21-2009, 05:41 PM   #46
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so i know asking about cost is pretty ridiculous to ask at this point... but are we looking at ~3-4k for the set? All I need is an over/under type answer
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      10-21-2009, 05:46 PM   #47
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Do these retain the OEM TD03 Centersection and TD03L turbine wheel?
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      10-21-2009, 05:55 PM   #48
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Quote:
Originally Posted by A418t81 View Post
If you are losing enough oil pressure to piss off your turbos, you've got much bigger bearings to worry about than the sleeve type

I've also seen some pretty jacked up sleeve bearing CHRAs come back to life for 2-300 bucks. A ballistics CHRA is easily 600-700+
You're focusing on re-build-ability and ignoring durability.

IMHO, if I have an oil pressure problem, I'd rather deal with just that issue.
BB is just more tolerant / more robust.

If you don't care for that feature... no problem.
But don't make like it's pointless to have.

Take this example:
You ingest something in one turbo, and it springs a leak, causing loss in oil pressure.
Now do you want to lose the other one too?

(This is an actual example. I know someone who lost both turbos in a TT upgrade exactly like this. The rest of the motor was fine - he just lost two turbos after one broke and leaked oil. The other turbo starved and was damaged too. )

As far as the helix upgrade, I'm not dissing their setup.
No need to 'defend journal bearing'. It's perfectly fine.
I'd gladly buy it if it performs and actually is 'very reasonably' priced.

To re-iterate :
I've got no problem with journal bearing. I just "want" a bb setup, because I have different priorities.
I understand that you prefer journal because it's cheap to fix.

-scheherazade
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      10-21-2009, 06:31 PM   #49
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Quote:
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Do these retain the OEM TD03 Centersection and TD03L turbine wheel?
+1
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      10-21-2009, 06:38 PM   #50
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Quote:
Originally Posted by scheherazade View Post
You're focusing on re-build-ability and ignoring durability.

IMHO, if I have an oil pressure problem, I'd rather deal with just that issue.
BB is just more tolerant / more robust.

If you don't care for that feature... no problem.
But don't make like it's pointless to have.

Take this example:
You ingest something in one turbo, and it springs a leak, causing loss in oil pressure.
Now do you want to lose the other one too?

(This is an actual example. I know someone who lost both turbos in a TT upgrade exactly like this. The rest of the motor was fine - he just lost two turbos after one broke and leaked oil. The other turbo starved and was damaged too. )

As far as the helix upgrade, I'm not dissing their setup.
No need to 'defend journal bearing'. It's perfectly fine.
I'd gladly buy it if it performs and actually is 'very reasonably' priced.

To re-iterate :
I've got no problem with journal bearing. I just "want" a bb setup, because I have different priorities.
I understand that you prefer journal because it's cheap to fix.

-scheherazade
No, I'm not. If you destroy one turbo and that catridge leaks, and that's enough to drop the oil pressure of the entire system enough to blow the other turbo, you've got MAJOR issues other than some bad turbos unless you are a total bonehead and have both turbos T'd off of a single feed line. The facts are that I have had ceramic ball bearing turbos in different cars for years (nearly a decade now) and they simply haven't been anywhere near as reliable as the standard sleeve bearing ones. The only exception is the 35R that I had on my old Evo. It now has about 60k on it and going strong, though it has never seen more than about 22 psi until recently (runs 30 psi on pump gas now).
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      10-21-2009, 06:46 PM   #51
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SICK, can't wait for this to be fully developed. BTW OP, i think i see your car around SJ, i live in voorhees..
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      10-21-2009, 06:49 PM   #52
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Quote:
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SICK, can't wait for this to be fully developed. BTW OP, i think i see your car around SJ, i live in voorhees..
yeah I live in Gibbsboro but sold the car last month...as far as turbo specs we will offer full disclosure once we get all of our tuning and data done!
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      10-21-2009, 07:11 PM   #53
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good luck guys. The Helix boys are dedicated and will hopefully turn out a product as robust and well accepted as their FMIC.
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      10-21-2009, 09:50 PM   #54
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Quote:
Originally Posted by TTurboBullett View Post
We just recently installed our upcoming direct bolt on turbo upgrade on our shop 135i, and we are currently in the testing and tuning phase. these turbos are good to 550hp worth of airflow and have stock like spool with a much better top end. As with all our Helix part offerings we do a rigorous testing phase and will readily supply all of our data and performance figures once we are ready to go to market so you can make an informed and educated purchase No rock solid pricing YET but we hope to come in at a very affordable price point

I hope it can deliver 500+ RWHP on "PUMP 93 and no meth" with all the usual current supporting mods. (FMIC, Catless DPs, Mid Pipes, Cat Back exhaust, DCI, Tune, etc...)

If it doesn't than if will go the route of the other 50+ RWHP turbo upgrades....i.e. who the f**k cares
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      10-21-2009, 09:52 PM   #55
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Will the software be with vishnu tuning like asr is? or are you working on your own software?
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      10-21-2009, 10:51 PM   #56
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Quote:
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good luck guys. The Helix boys are dedicated and will hopefully turn out a product as robust and well accepted as their FMIC.
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      10-21-2009, 11:07 PM   #57
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yea yea we've hered about *TESTING PHASE* more than a few times here....

but i really loved ur guy's FMIC!!!!!!!!!!!!! please give us prices and when can we purchase them
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      10-21-2009, 11:34 PM   #58
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it's good to have options and competition is a good thing for customers... can't wait for more info!
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      10-21-2009, 11:35 PM   #59
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YES!!!!
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      10-21-2009, 11:53 PM   #60
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wow, Im waiting for these
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      10-21-2009, 11:54 PM   #61
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whats about the price range?
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      10-22-2009, 01:21 AM   #62
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Quote:
Originally Posted by TTurboBullett View Post
yeah I live in Gibbsboro but sold the car last month...as far as turbo specs we will offer full disclosure once we get all of our tuning and data done!
oh, okay.
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      10-22-2009, 08:55 AM   #63
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2010 too far...need to save money on the 2010 Football World Cup in Africa...i am sure those turbos will only be ready late next year...
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      10-22-2009, 09:32 AM   #64
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2010 too far...need to save money on the 2010 Football World Cup in Africa...i am sure those turbos will only be ready late next year...

no fair!! I've decided to just save up for Brazil 2014
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      10-22-2009, 09:33 AM   #65
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this is why i dont travel for these things.... so i can buy turbo upgrades
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      10-22-2009, 02:46 PM   #66
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I just hope the turbos will fit better than Helix intercooler, which was announced as direct bolt on, with no trimming needed.
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